Margaret is passionately committed to animal rights. at an evening lecture required for her biology class, she learned that the title of the speaker's talk was "the importance of animal experimentation to medical advances." offended and sure that the speaker had nothing ethical or interesting to say, margaret paid no attention at all during the lecture. according to your textbook, the primary cause of margaret's poor listening was
a. poor concentration.
b. focusing on the speaker's topic.
c. being distracted by external interference.
d. jumping to conclusions.
e. spare "brain time."